贵州贞丰县簸箕田Ⅰ金矿水化学与井巷充水特征分析

Analysis on water chemistry and water filling characteristics of BojitianⅠgold deposit in Zhenfeng County,Guizhou Province

水化学信息识别法是井巷充水水源识别方法中最常用的一种。对贵州省簸箕田Ⅰ金矿运用水化学信息识别法,结合井巷水文地质调查,查明了深部井巷充水的水源。利用Piper三线图解法、水体常规组分聚类法及微量元素分析等对簸箕田代表性水体进行分析。研究结果表明:灰家堡背斜轴北部地下水在灰岩中径流时间较长,涌水量较大,受近EW向隐伏构造控制;背斜南部地下水灰岩中径流时间较短,且水量较小,目前井巷主要充水水源来自于近地表的夜郎组地层。

Hydrochemical information identification method is one of the most commonly used methods for identification of water sources in underground mining lanes.The water source of deep well lane filled with water in BojitianⅠgold deposit in Guizhou Province was identified,by combination of chemical information identification method and hydrogeological survey of well lane.The representative water body was analyzed by means of Piper trigraph method,routine component clustering method and trace element analysis.The result of the study showed that the groundwater in the north of the anticline of the Huijiabao has a long runoff time in the limestone,the water flow in the roadway is large,and it is controlled by the near-east-west concealed structure;while the groundwater in the south of the anticline,has a short runoff time and a small amount of water.At present,the main water source for the well lane is from the Yelang Formation near the surface.